Simpson Strong-Tie® connectors, anchors and fasteners feature a wide range of materials and coatings designed to meet specific performance criteria. It is important to select a material and/or coating that is suitable for the intended application and environment based upon factors such as corrosion resistance and mechanical properties of the material. For more information on selecting connectors, anchors and fasteners based upon corrosion resistance, please see General Corrosion Risks, Guidelines for Selecting the Proper Materials and Coatings, Materials and Coatings Available – Connectors, and Materials and Coatings Available – Fasteners for more information on selecting products based on corrosion resistance.

Not all products are available in all finishes. Contact Simpson Strong-Tie for product availability, ordering information and lead times.

Coatings and Materials Available

Level of Corrosion Resistance

Coating or Material

Description

Connectors

Fastener Material or Finish

Low

gray paint

Organic paint intended to protect the product while it is warehoused and in transit to the jobsite.

Galvanized (G185) 1.85 oz. of zinc per square foot of surface area (hot-dip galvanized per ASTM A653) total for both sides. Products with a powder-coat finish over a ZMAX® base have the same level of corrosion resistance.

Hot-Dip Galvanized,Mechanically Galvanized,or Double-Barrier Coating * Bright fasteners may be used with ZMAX or HDG connectors where low corrosion resistance is allowed

Products are hot-dip galvanized after fabrication (14 ga. and thicker). The coating weight increases with material thickness. The minimum average coating weight is 2.0 oz./ft.2 (per ASTM A123) total for both sides. Anchor bolts are hot-dip galvanized per ASTM F2329.

High/Severe

Type 316 Stainless Steel

Type 316 stainless steel is a nickel-chromium austenitic grade of stainless steel with 2-3% molybdenum. Type 316 stainless steel is not hardened by heat treatment and is inherently nonmagnetic. It provides a level of corrosion protection suitable for severe environments, especially environments with chlorides.

Type 316 Stainless Steel

Fasteners

Applicable Products

Low

Bright

No surface coating.

Nails

Electrocoating (E-Coat™)

Electrocoating utilizes electrical current to deposit the coating material on the fastener. After application, the coating is cured in an oven. Electrocoating provides a minimum amount of corrosion protection and is recommended for dry, low-corrosive applications.

Strong-Drive® SDWF,SDW and SDWV screws

Clear and Bright Zinc, ASTM F1941

Zinc coatings applied by electrogalvanizing processes to fasteners that are used in dry service and with no environmental or material corrosion hazard.

SD8Wafer Head Screw

Medium

ASTM A153, Class D

Hot-dip galvanized fasteners 3/8" and smaller in diameter in accordance with ASTM A153, Class D. Hot-dip galvanized fasteners are compliant with the 2015 and 2018 IRC and IBC.

Strong-Drive SCN Nail

Type 410 Stainless Steel with Protective Top Coat

Carbon martensitic grade of stainless steel that is inherently magnetic, with an added protective top coat. This material can be used in mild atmospheres and many mild chemical environments.

Titen® Stainless-Steel Concreteand Masonry Screw

MechanicallyGalvanized Coating,ASTM B695, Class 55

Simpson Strong-Tie® Strong-Drive SD Connector screws are manufactured with a mechanically applied zinc coating in accordance with ASTM B695, Class 55, with a supplemental overcoat. These fasteners are compatible with painted and zinc-coated (G90 and ZMAX) connectors.

Simpson Strong-Tie Strong-Drive Timber-Hex screws are hot-dip galvanized in accordance with ASTM A153, Class C. These hot-dip galvanized fasteners have a minimum average of 1.25 oz./ft.2 of zinc coating and are compliant with the 2015 and 2018 IRC (R317.3) and IBC.

Strong-DriveTIMBER-HEX HDG Screw

Type 316 Stainless Steel

Type 316 stainless steel is a nickel-chromium austenitic grade of stainless steel with 2-3% molybdenum. It provides a level of corrosion protection suitable for severe environments, especially environments with chlorides. Type 316 stainless-steel fasteners are compliant with the 2015 and 2018 IBC and IRC.